Final answer:
Increased interactions between the U.S. and other nations led to the development of a stronger federal government to manage international relations and trade.
Step-by-step explanation:
The change that happened to the US government because of the increased interactions between the U.S. states and other nations was The development of a stronger federal government. As the United States began to engage more with international trade and affairs, the complexities of such interactions necessitated a more centralized authority to manage diplomatic relationships, regulate commerce, and ensure the country's security.
This centrality of federal power was, in part, a response to events such as the French Revolution, which deeply divided American opinion in the 1790s, and the challenges of protecting American interests during the Napoleonic Wars, as mentioned in the historical documents. The answer to the presented multiple-choice question would be 'D'.